svn remove log/*
svn propset svn:ignore "*.log" log/
svn update log/
svn move config/database.yml config/database.example
svn propset svn:ignore "database.yml" config/
svn update config/
svn remove tmp/*
svn propset svn:ignore "*" tmp/
svn update tmp/
svn commit -m "ignore: log tmp, database.yml"